Dual Phase / Multi-Phase Vacuum Extraction

Dual-phase / multi-phase extraction (DPE/MPE) is a general term for technologies that extract volatile organic chemicals (VOCs) in soil vapor and groundwater simultaneously. Multi-phase extraction systems utilize a vacuum system, which can also be combined with a down-hole pumping system, to remove various combinations of contaminated groundwater, non-aqueous phase liquids (NAPLs), and their associated vapors from the subsurface. By lowering the water table around the contaminants, DPE/MPE systems expose and influence more of the contaminated media/formation, thereby allowing the newly exposed vadose zone to be treated by vapor extraction. Once pumped to the surface, the associated liquids and organic vapors are separated and treated.